My Gen 1 NMG Ruleset

Poke doll to Skip Rocket Hideout Sidequest is allowed
Dig Dodge Battle Glitch is allowed
Instant Text Bike shop Trigger Glitch is allowed (I'll generally not use it though Unless i can route it in properly)
Brock Skip is banned
Save Corruption is banned Item Under/overflow glitches are banned
Missingno item Duplication is banned
Trainer Fly is banned

If there's anything else I wanna add i'll add it later.